Composition comprising a semiconducting light emitting nanoparticle
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Solution Overview
Problem
Existing compositions of semiconducting light emitting nanoparticles face challenges with dispersibility, initial Quantum Yield, long-term stability, optical density, and dispersibility at higher concentrations, which are not adequately addressed in prior art.
Innovation Solution
A novel composition comprising semiconducting light emitting nanoparticles with a core and shell layers, coated with a polymer containing specific functional groups and (meth)acrylate units, along with a solvent system, enhancing dispersibility and stability, and used in electronic and optical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional compositions of semiconducting light emitting nanoparticles are used, then the basic light emitting function is achieved, but the dispersibility of nanoparticles in the composition is insufficient
Solution Approach 1:
The patent uses a composite polymer structure containing both hydrophilic groups (carboxymethyl, hydroxyl) and hydrophobic groups (alkyl chains, aryl groups) to create a material that can simultaneously interact with both polar and non-polar components of the nanoparticle surface and surrounding medium, achieving stable dispersion
Solution Approach 2:
The polymer is designed with different functional groups distributed along the chain - hydrophilic groups at one end for interacting with the nanoparticle surface and hydrophobic groups extending outward for compatibility with the dispersion medium, creating local variations in polarity that resolve the dispersibility-stability contradiction
2Reliability
If conventional compositions are used, then the structure is simple, but the initial Quantum Yield of the nanoparticles is insufficient
Solution Approach 1:
The patent employs a composite polymer consisting of a backbone chain with grafted functional groups (carboxymethyl, hydroxyl, alkyl, aryl groups) to provide multiple interaction mechanisms that enhance quantum yield without requiring complex multi-component formulations
Solution Approach 2:
The patent optimizes specific parameters of the polymer including the ratio of hydrophilic to hydrophobic groups, molecular weight, and degree of substitution to maximize quantum yield while maintaining compositional simplicity
3Reliability
If conventional compositions are used, then the formulation is straightforward, but the long term stability and stable Quantum Yield are insufficient
Solution Approach 1:
The multifunctional polymer provides simultaneous steric stabilization (via extended alkyl and aryl groups), electrostatic stabilization (via carboxymethyl and hydroxyl groups), and surface passivation, achieving long-term stability and quantum yield stability in a single formulation component
Solution Approach 2:
The polymer performs multiple functions simultaneously: dispersant, stabilizer, quantum yield enhancer, and protective coating, eliminating the need for multiple separate additives and simplifying the overall formulation despite the enhanced performance
4Illumination intensity
If conventional compositions are used, then the preparation is simple, but the Optical Density at excitation wavelength is insufficient
Solution Approach 1:
The patent optimizes the polymer concentration, molecular weight, and functional group density to maximize optical density at the excitation wavelength, achieving higher light absorption efficiency without complicating the preparation process
5Stability of the object's composition
If conventional compositions are used, then the formulation is simple, but the dispersibility at higher concentration is insufficient
Solution Approach 1:
The polymer's combination of hydrophilic and hydrophobic groups creates a steric barrier that prevents nanoparticle aggregation even at high concentrations, while the overall formulation remains relatively simple
Solution Approach 2:
The polymer chains provide local steric hindrance through their extended hydrophobic groups while maintaining overall solution homogeneity, enabling high concentration dispersion without requiring complex formulation strategies
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition exhibits improved dispersibility, initial Quantum Yield, long-term stability, and higher optical density, enabling better performance in electronic and optical devices.
Implementation Method 1
the polymer comprises at least a repeating unit A comprising a phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, tertiary amine, carboxyl group, hetero cyclic group, silane group, sulfonic acid, hydroxyl group
Implementation Method 2
showing higher Optical Density (OD) at an excitation wavelength
Implementation Method 3
showing improved initial Quantum Yield of said semiconducting light emitting nanoparticles
Data Source
AI summary
The present invention relates to a composition comprising a semiconducting light emitting nanoparticle.